Gordon and Denise Baciorek of Temecula show their support during a candle light vigil for the victims of a mass shooting at the Inland Regional Center held at San Manuel Stadium in San Bernardino on Thursday, Dec. 3, 2015. Police officers investigate the site of a shootout along E. San Bernardino Ave., in San Bernardino on Thursday, Dec. 3, 2015 the day after two attackers opened fire on a banquet at the Inland Regional Center in San Bernardino. (File photo by Terry Pierson, The Press-Enterprise/SCNG)

Three years after 14 people were killed and 22 wounded by gunfire during a gathering for county employees at San Bernardino’s Inland Regional Center, San Bernardino County officials are asking the public to honor the victims by observing a moment of silence at 10:55 a.m. Sunday, Dec. 2, about the time of the shooting, and to fly flags at half-staff on that day.

Two people who were involved in a shooting inside the Inland Regional Center in San Bernardino share a moment after being evacuated to San Bernardino Golf Club, located across the street from the Inland Regional Center, on Wednesday, Dec. 1, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

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A victim is transported from the Inland Regional Center building in San Bernardino after a mass shooting took place on Wednesday, Dec. 2, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

A victim of the San Bernardino mass shooting is transported to a waiting ambulance as other ambulances stand ready at the scene of the shooting at the Inland Regional Center in San Bernardino Wednesday, Dec. 2, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

Emergency personnel gather outside the Inland Regional Center in San Bernardino after a mass shooting there on Wednesday, Dec. 2, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

A police officer checks a vehicle coming to the emergency entrance of Arrowhead Regional Medical Center in Colton after a mass shooting in San Bernardino on Wednesday, Dec. 2, 2015. (File photo by Kurt Miller, The Press-Enterprise/SCNG)

A SWAT vehicle carries police officers north on Waterman Avenue where an active shooter situation was taking place at the Inland Regional Center on Wednesday, December 2, 2015, San Bernardino. (File photo by Micah Escamilla, The Sun/SCNG)

An armored vehicle makes it way down Almond and Mt. View in San Bernardino after two suspects were shot after a mass shooting at the Inland Regional Center on Wednesday, Dec. 2, 2015. (File photo by Kurt Miller, The Press-Enterprise/SCNG)

SWAT members are transported on an armored vehicle at the scene after a mass shooting in San Bernardino Wednesday, Dec. 2, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

Law enforcement officers search for a suspect involved where at least 14 people were killed and 14 others injured at an incident at the Inland Regional Center on Wednesday December 2, 2015. (File photo by Keith Durflinger, Los Angeles Daily News/SCNG)

A San Bernardino County Sheriff’s officer trains his weapon at an area where a shooting suspect or suspects is thought to be hiding along San Bernardino Ave in the city of Redlands. (File photo by Ed Crisostomo, The Press-Enterprise/SCNG)

SWAT officers in an armored vehicle make their way down the 1500 block of South Richardson in San Bernardino to investigate a report of a possible shooting suspect hiding in the area after a mass shooting in San Bernardino on Wednesday, Dec. 2, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

SWAT officers from the San Bernardino County Sheriff’s Department stage in the 1500 block of South Richardson in San Bernardino as they respond to a report of a possible shooting suspect hiding in the area after a mass shooting in San Bernardino on Wednesday, Dec. 2, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

SWAT officers point their weapons down a road located on the north side of Victoria Elementary School in the 1500 block of South Richardson in San Bernardino following a report of a possible shooting suspect in the area, on Wednesday, Dec. 2, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

Police respond to the scene of an active shooting at Inland Regional Center in San Bernardino, CA on Wednesday, Dec. 2, 2015. Officials say 15 to 20 people have been wounded. (Photo by Rachel Luna/The Sun)

SWAT officers approach a building n the 1500 block of South Richardson in San Bernardino to investigate a report of a possible shooting suspect in the area, on Wednesday, Dec. 2, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

SWAT officers run to the north side of Victoria Elementary School in the 1500 block of South Richardson in San Bernardino following a report of a possible shooting suspect in the area, on Wednesday, Dec. 2, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

A Redlands Police officer moves into position as police search for gunmen at Richardson and San Bernardino Avenue after a mass shooting that left 14 people dead in San Bernardino Wednesday, Dec. 2, 2015. (File photo by David Bauman, The Press-Enterprise/SCNG)

Law enforcement personnel run with guns drawn toward an officer involved shooting in San Bernardino after a mas shooting earlier in the day at the Inland Regional Center in San Bernardino on Wednesday, Dec. 2, 2015. (File photo by David Danelski, The Press-Enterprise/SCNG)

Law enforcement personnel from various agencies run with guns drawn toward an ongoing officer involved shootout in San Bernardino after a mass shooting earlier in the day at the Inland Regional Center in San Bernardino on Wednesday, Dec. 2, 2015. (File photo by David Danelski, The Press-Enterprise/SCNG)

Police respond to the scene of a police shootout in San Bernardino, CA on Wednesday, Dec. 2, 2015. Officials reported upwards of 14 people killed and 14 people wounded. (Photo by Rachel Luna/The Sun)

Emotions are high as workers are reunited on Waterman Avenue south of Orangeshow Blvd. after gunmen killed 14 people and injured many more during a mass shooting in San Bernardino Wednesday, Dec. 2, 2015. (File photo by Terry Pierson, The Press-Enterprise/SCNG)

Officers search San Bernardino Ave. for evidence on Thursday, Dec. 3, 2015 near the SUV that the shooting suspects were driving, a day after a mass shooting in San Bernardino. (File photo by Kurt Miller, The Press-Enterprise/SCNG)

Law enforcement officers search for a suspect involved where at least 14 people were killed and 14 others injured at an incident at the Inland Regional Center on Wednesday December 2, 2015. (File photo by Keith Durflinger, Los Angeles Daily News/SCNG)

People gather at San Bernardino Golf Course after being evacuated from Inland Regional Center where an active shooter situation had taken place on Wednesday, December 2, 2015, San Bernardino. (Micah Escamilla, The Sun/SCNG)

Emilie Gleisberg, left, hugs her mother Diane Kimble, right, as family members reunite at The Rock Church after at least 14 people were killed and 17 others injured by two shooters at the Inland Regional Center in San Bernardino on Wednesday, Dec. 2, 2015. (Thomas R. Cordova, Daily Breeze/Press-Telegram/SCNG)

Law enforcement officers search for a suspect involved where at least 14 people were killed and 14 others injured at an incident at the Inland Regional Center on Wednesday December 2, 2015. (Photo by Keith Durflinger/Los Angeles News Group)

SWAT team at the scene after the shootout between San Bernardino Police and the suspects near the intersection of Richardson St. and San Bernardino Ave. in San Bernardino, Calif. on Wednesday, Dec. 2, 2015. Two suspects were believed killed or wounded, and a third possibly remained on the loose, following an exchange of gunfire near the scene of a mass shooting at the Inland Regional Center in San Bernardino.(Photo by Watchara Phomicinda/ Los Angeles News Group)

Staff from the Inland Valley Regional Facility for the Mentally Disable walk to school buses on Waterman Avenue after shooter, shot as many as 20 people at the Inland Valley Regional Facility in San Bernardino, CA., Wednesday, December 2, 2015. (Photo by James Carbone for the SAn Bernardino Sun)

In this image taken from video, armored vehicles surround an SUV following a shootout in San Bernardino, Calif., Wednesday, Dec. 2, 2015. The scene followed a military-style attack that killed multiple people and wounded others at a California center that serves people with developmental disabilities, authorities said. (KTTV via AP)

Authorities in San Bernardino have responded to an active shooter situation near the Inland Regional Center where city fire officials say 15 to 20 people have been wounded. (Photo by KTLA)

Emotions are high as workers are reunited on Waterman Avenue south of Orangeshow Blvd. after gunmen killed 14 people and injured others during a mass shooting in San Bernardino Wednesday, Dec. 2, 2015. (File photo by Terry Pierson, The Press-Enterprise/SCNG)

Police officers investigate the site of a shootout along E. San Bernardino Ave., in San Bernardino on Thursday, Dec. 3, 2015 the day after two attackers opened fire on a banquet at the Inland Regional Center in San Bernardino. (File photo by Ed Crisostomo, The Press-Enterprise/SCNG)

Police officers investigate the site of a shootout along E. San Bernardino Ave., in San Bernardino on Thursday, Dec. 3, 2015 the day after two attackers opened fire on a banquet at the Inland Regional Center in San Bernardino. (File photo by Ed Crisostomo, The Press-Enterprise/SCNG)

Gordon and Denise Baciorek of Temecula show their support during a candle light vigil for the victims of a mass shooting at the Inland Regional Center held at San Manuel Stadium in San Bernardino on Thursday, Dec. 3, 2015. Police officers investigate the site of a shootout along E. San Bernardino Ave., in San Bernardino on Thursday, Dec. 3, 2015 the day after two attackers opened fire on a banquet at the Inland Regional Center in San Bernardino. (File photo by Terry Pierson, The Press-Enterprise/SCNG)

Alex Hernandez, of West Covina, lights a candle as he says a prayer along S Waterman Ave. on Friday, Dec. 4, 2015, near the Inland Regional Center, the site of a mass shooting in San Bernardino. (File photo by Ed Crisostomo, The Press-Enterprise/SCNG)

Melissa Smith of the Inland Emprire kneels in prayer at the make-shift memorial for the San Bernardino shooting victims at the corner of Waterman Ave. and Orange Show Rd. on Friday, Dec. 4, 2015. (File photo by Kurt Miller, The Press-Enterprise/SCNG)

A San Bernardino County Sheriff’s deputy escorts two young school girls to their home on San Bernardino Ave., on Friday, Dec. 4, 2015. The vehicle that two shooting suspects were shot to death by police in a few days earlier remains on the street. (File photo by David Bauman, The Press-Enterprise/SCNG)

Summer Adams, widow of Robert Adams, left, hugs her mother-in-law Carole Adams after Carole spoke to those attending the city of Yucaipa candlelight vigil held at Yucaipa Community Park in Yucaipa Sunday, Dec. 6, 2015 in the memory of Yucaipa resident Robert Adams, one of the 14 victims killed in the shooting in San Bernardino on Dec. 2. (File photo by Terry Pierson, The Press-Enterprise/SCNG)

The Inland Regional Center Conference Center still sits gated on Wednesday, May 25, 2016 in San Bernardino. The conference center was the site of the December 2 terrorist attack that occurred in San Bernardino.

The Inland Regional Center Conference Center still sits gated on Wednesday, May 25, 2016 in San Bernardino. The conference center was the site of the December 2 terrorist attack that occurred in San Bernardino.

A memorial site at the corner of Waterman Ave. and Orange Show Road, just north of the Inland Regional Center Conference Center still exists on Wednesday, May 25, 2016 in San Bernardino. The conference center was the site of the December 2 terrorist attack that occurred in San Bernardino.

People gather at the memorial site on the corner of Waterman Ave and Orange Show Rd for the shooting victims on Saturday, Dec.05, 2015 in San Bernardino.